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Optimization of 16-ary Quadrature Amplitude Modulation Constellations for Phase Noise Impaired Channels

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Abstract

An iterative constellation optimization algorithm is used to find new 16-ary Quadrature Amplitude Modulation (QAM) constellations. The constellations double phase noise tolerance and improve receiver sensitivity by up to 0.3 dB compared to the square 16-QAM constellation.

© 2011 Optical Society of America

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